Because just may be simply just ...

Fact: It is a bit strange! - You MUST be measured at exactly the point between the eyes above the nose, which is marked on the label. A deviation from this point to the left, right, up or down brings deviations in temperature measurement. Basically quite simple, but ... it takes a while to really get used to it.

It may be that equipment has been delivered - in front of my - had no "reference" sticker on the device directly below the measuring button. We have such a sticker just shows again and again, be measured WHERE MUST! - I mean I can recessions to the devices regarding temperature deviation understand if at the wrong places or measured.. If measured in the right place, the measurements are always identical. The temperature is then identical to other measuring methods, everyone likes even find out. Double measurement before confidence is always always a must, also the reference point to have clearly ;-) ...

We have paid for the device MONEY, not a low, good price - and to be honest: Who buys cheap, buys twice! - If I count everything together, what we spent and what is good for nothing, the unit would have been paid here and we could get something out.

Conclusion: The "thing" is no! if and but very good! - But must be properly used. A photo bon the "label" of the SO is important attached.

PS: We have the equipment for more than a year now and this is no "Happily" review ;-)